uvm_fault(0xfffffd806bdfe1f8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff831e3ae0 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a36a7c0 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff831e3ae0 Starting stack trace... panic(ffffffff83333def) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a36a710) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001548000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff80003c449c58) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c449c58) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a36a8c0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806a4bf638,81,fffffd807f7d3888,ffff80003c449c58) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aa5be38,ffff80003c449c58) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aa5be38,ffff80003c449c58) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806aa5be38,ffff80003c449c58) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806aa5be38,ffff80003c449c58) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c449c58) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c449c58,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003c449c58,ffff80002a36ac30,ffff80002a36ab80) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a36ac30) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a36ac30) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7537b5bcf3a0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 49 0 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 88632 49426 0 0 0 1 syz-executor 180426 23978 0 0x14000 0x200 0 reaper savectx() at savectx+0xae end of kernel end trace frame: 0x7a0b0a959920, count: 14 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806bdfe1f8, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7a0b0a959920, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a390420 rbx 0 rdx 0 rcx 0xffff80003c44f4c0 rax 0x32 r8 0xffff80002a390350 r9 0x80713 acpi_pdirpa+0x6c584 r10 0x334d6790857c5e18 r11 0xac2752859beea473 r12 0 r13 0 r14 0xffff80003c44f4c0 r15 0 rip 0xffffffff81a013ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002a3903a0 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=88632 pid=49426 tcnt=1 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c4c1758,0xffffffff839f6210 process=0xffff8000fffec4d0 user=0xffff80002a38b000, vmspace=0xfffffd807eb8c5a0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *49426 88632 86009 0 7 0 syz-executor 59428 213524 38816 0 2 0x100002 sh 60049 399003 41537 0 2 0 syz-executor 60049 280258 41537 0 3 0x4000080 fsleep syz-executor 76766 249499 17409 0 2 0 syz-executor 76766 260109 17409 0 3 0x4000080 fsleep syz-executor 31789 348249 63558 0 3 0 vmmaplk syz-executor 31789 345043 63558 0 3 0x4000080 fsleep syz-executor 31789 417161 63558 0 2 0x4000000 syz-executor 20311 477743 85832 0 2 0 syz-executor 20311 381678 85832 0 3 0x4000080 netcon syz-executor 20311 248285 85832 0 2 0x4000000 syz-executor 38816 62465 27183 0 3 0x82 wait syz-executor 41537 162785 27183 0 3 0x82 nanoslp syz-executor 76264 53112 1 0 3 0x100083 ttyin getty 63558 69159 27183 0 3 0x82 nanoslp syz-executor 17409 153838 27183 0 3 0x82 nanoslp syz-executor 32764 334053 0 0 3 0x14280 nfsidl nfsio 70408 14937 0 0 3 0x14280 nfsidl nfsio 38828 175321 0 0 3 0x14280 nfsidl nfsio 81633 283506 0 0 3 0x14280 nfsidl nfsio 75535 386493 0 0 3 0x14280 nfsidl nfsio 480 414701 0 0 3 0x14280 nfsidl nfsio 79526 19434 0 0 3 0x14280 nfsidl nfsio 91825 47167 0 0 3 0x14280 nfsidl nfsio 20274 274668 0 0 3 0x14280 nfsidl nfsio 11641 383956 0 0 3 0x14280 nfsidl nfsio 79240 466348 0 0 3 0x14280 nfsidl nfsio 9133 197060 0 0 3 0x14280 nfsidl nfsio 9033 90055 0 0 3 0x14280 nfsidl nfsio 85045 42495 0 0 3 0x14280 nfsidl nfsio 25205 241631 0 0 3 0x14280 nfsidl nfsio 15898 25299 0 0 3 0x14280 nfsidl nfsio 83860 458708 0 0 3 0x14280 nfsidl nfsio 66573 335780 0 0 3 0x14280 nfsidl nfsio 87466 100527 0 0 3 0x14280 nfsidl nfsio 57345 201831 0 0 3 0x14280 nfsidl nfsio 26913 140310 27183 0 3 0x82 nanoslp syz-executor 86009 12456 27183 0 3 0x82 nanoslp syz-executor 85832 79512 27183 0 3 0x82 nanoslp syz-executor 58184 155209 0 0 3 0x14200 bored sosplice 45810 479232 27183 0 3 0x82 wait syz-executor 27183 266292 81437 0 3 0x82 kqread syz-executor 81437 500870 8138 0 3 0x10008a sigsusp ksh 8138 86196 10450 0 3 0x98 kqread sshd-session 10450 239161 8847 0 3 0x92 kqread sshd-session 8847 15863 1 0 3 0x88 kqread sshd 66711 2919 57835 74 3 0x1100092 bpf pflogd 57835 185519 1 0 3 0x80 sbwait pflogd 42042 176176 29581 73 3 0x1100090 kqread syslogd 29581 236194 1 0 3 0x100082 sbwait syslogd 78749 365314 1 0 3 0x100080 kqread resolvd 15468 382839 51833 77 3 0x100092 kqread dhcpleased 10724 163162 51833 77 3 0x100092 kqread dhcpleased 51833 114646 1 0 3 0x80 kqread dhcpleased 17477 491602 0 0 3 0x14200 bored smr 76170 77912 0 0 2 0x14200 zerothread 61689 382574 0 0 3 0x14200 aiodoned aiodoned 92336 416780 0 0 3 0x14200 syncer update 16287 286498 0 0 3 0x14200 cleaner cleaner 23978 180426 0 0 7 0x14200 reaper 94001 58013 0 0 3 0x14200 pgdaemon pagedaemon 14150 413657 0 0 3 0x14200 bored viomb 6945 407171 0 0 3 0x40014200 acpi0 acpi0 87841 95783 0 0 3 0x40014200 idle1 556 148686 0 0 3 0x14200 bored softnet3 32141 240351 0 0 3 0x14200 bored softnet2 74899 342845 0 0 3 0x14200 bored softnet1 5342 65157 0 0 3 0x14200 netlock softnet0 41641 498641 0 0 2 0x40014200 systqmp 51248 217406 0 0 3 0x14200 bored systq 20205 162855 0 0 3 0x14200 tmoslp softclockmp 90087 500370 0 0 3 0x40014200 tmoslp softclock 63051 307692 0 0 3 0x40014200 idle0 1 230269 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 59428 (sh) thread 0xffff80003c4c1758 (213524) exclusive rwlock vmmaplk r = 0 (0xfffffd806bdfe6b8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227 #3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3797 #4 process_new+0x572 sys/kern/kern_fork.c:282 #5 fork1+0x3ea sys/kern/kern_fork.c:408 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd800cd77120) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3788 #4 process_new+0x572 sys/kern/kern_fork.c:282 #5 fork1+0x3ea sys/kern/kern_fork.c:408 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #7 Xsyscall+0x128 Process 31789 (syz-executor) thread 0xffff80003c4487d8 (417161) exclusive rwlock vmmaplk r = 0 (0xfffffd800cd778a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x8a5 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x8a5 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 20311 (syz-executor) thread 0xffff80003c448548 (248285) exclusive rwlock fdlock r = 0 (0xffff8000fffeb6c8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 doopenat+0x173 sys/kern/vfs_syscalls.c:-1 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #4 Xsyscall+0x128 Process 23978 (reaper) thread 0xffff8000ffffd1f8 (180426) exclusive rwlock kmmaplk r = 0 (0xffffffff839cdc40) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5227 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:291 #6 reaper+0x1cb sys/kern/kern_exit.c:470 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10260 11176K 12501K 166960K 15131 0 pcb 18 16K 18K 166960K 586 0 rtable 156 14K 15K 166960K 1456 0 pf 41 19K 20K 166960K 364 0 ifaddr 31 6K 9K 166960K 278 0 ifgroup 60 2K 3K 166960K 430 0 sysctl 4 1K 9K 166960K 30 0 counters 68 36K 37K 166960K 458 0 ioctlops 0 0K 4K 166960K 2235 0 iov 0 0K 24K 166960K 324 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1556 98K 98K 166960K 4190 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 40K 44K 166960K 66 0 VM map 2 1K 1K 166960K 2 0 sem 16 40K 40K 166960K 323 0 dirhash 15 2K 3K 166960K 69 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 240K 166960K 3582 0 sigio 0 0K 0K 166960K 188 0 proc 75 103K 128K 166960K 1566 0 subproc 72 4K 4K 166960K 309 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 391 0 in_multi 41 3K 7K 166960K 518 0 ether_multi 1 0K 0K 166960K 41 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 1310 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 243 177K 190K 166960K 33191 0 UVM aobj 187 8K 8K 166960K 194 0 pinsyscall 44 88K 104K 166960K 5332 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 148 0 NDP 15 0K 2K 166960K 199 0 temp 78 8684K 9708K 166960K 127427 0 kqueue 15 22K 30K 166960K 617 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 332 0 326 2 1 1 2 0 8 0 rtentry 176 471 0 422 6 1 5 6 0 8 0 unpcb 144 1979 0 1961 13 12 1 7 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 909 0 902 19 15 4 8 0 8 3 arp 128 81 0 67 1 0 1 1 0 8 0 inpcb 384 3117 0 3105 38 29 9 11 0 8 7 nd6 144 118 0 110 2 1 1 2 0 8 0 pkpcb 40 25 0 25 7 7 0 1 0 8 0 kcovpl 48 34 0 26 1 0 1 1 0 8 0 mppekey 1024 4 0 4 4 3 1 1 0 8 1 ppxss 1192 139 0 139 6 5 1 1 0 8 1 pppxif 1504 20 0 20 8 7 1 1 0 8 1 pfstscr 40 2 0 2 2 2 0 1 0 8 0 pffrag 232 21 0 16 1 0 1 1 0 482 0 pffrnode 88 16 0 12 1 0 1 1 0 8 0 pffrent 40 108 0 103 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 231 0 118 1 0 1 1 0 8 0 pfstkey 128 237 0 124 4 0 4 4 0 8 0 pfstate 384 235 0 122 12 0 12 12 0 8 0 pfrule 1344 45 0 38 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1990 0 1796 44 23 21 30 0 8 6 art_table 32 1993 0 1796 4 0 4 4 0 8 1 art_node 16 461 0 425 1 0 1 1 0 8 0 sysvmsgpl 40 116 0 80 1 0 1 1 0 8 0 semapl 112 317 0 303 1 0 1 1 0 8 0 shmpl 112 191 0 7 6 0 6 6 0 8 0 dirhash 1024 55 0 36 3 0 3 3 0 8 0 dino2pl 256 7626 0 6070 99 1 98 98 0 8 0 ffsino 288 7626 0 6070 112 0 112 112 0 8 0 nchpl 144 12111 0 10337 66 0 66 66 0 8 0 rtmask 32 31 0 31 8 7 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 45505 0 45505 9 8 1 3 0 8 1 percpumem 16 244 0 195 1 0 1 1 0 8 0 kstatmem 264 266 0 234 3 0 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 14 0 14 11 10 1 1 0 8 1 scxspl 216 35230 0 35230 19 17 2 8 1 8 2 plimitpl 152 852 0 835 1 0 1 1 0 8 0 sigapl 424 3864 0 3792 12 3 9 9 0 8 0 knotepl 120 780 0 0 23 0 23 23 0 8 0 kqueuepl 224 1268 0 1257 14 11 3 5 0 8 2 pipepl 336 640 0 613 18 15 3 8 0 8 0 fdescpl 520 3799 0 3766 3 0 3 3 0 8 0 filepl 160 24368 0 24105 38 21 17 20 0 8 4 lockfpl 104 945 0 943 2 0 2 2 0 8 1 lockfspl 48 351 0 349 1 0 1 1 0 8 0 sessionpl 144 51 0 42 1 0 1 1 0 8 0 pgrppl 48 144 0 127 1 0 1 1 0 8 0 ucredpl 104 4210 0 4197 1 0 1 1 0 8 0 zombiepl 144 4737 0 4735 1 0 1 1 0 8 0 processpl 1208 3864 0 3792 7 1 6 6 0 8 0 procpl 656 9335 0 9257 10 2 8 8 0 8 0 srpgc 96 45 0 45 9 8 1 1 0 8 1 sosppl 168 30 0 30 5 5 0 1 0 8 0 sockpl 728 5516 0 5480 52 42 10 25 0 8 6 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 4 0 4 4 0 8 0 mtagpl 96 45 0 0 2 0 2 2 0 8 0 mbufpl 256 348 0 0 20 1 19 20 0 8 0 bufpl 280 8980 0 2838 440 0 440 440 0 8 1 anonpl 32 10076 0 0 81 0 81 81 0 246 0 amapchunkpl 152 112243 0 111753 59 32 27 34 0 158 4 amappl16 200 6850 0 6817 62 57 5 15 0 8 0 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 167 0 154 1 0 1 1 0 8 0 amappl13 176 5 0 5 2 2 0 1 0 8 0 amappl12 168 4853 0 4820 4 2 2 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 4 0 3 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 33 0 29 1 0 1 1 0 8 0 amappl7 128 161 0 148 1 0 1 1 0 8 0 amappl6 120 442 0 437 1 0 1 1 0 8 0 amappl5 112 231 0 221 1 0 1 1 0 8 0 amappl4 104 412 0 391 1 0 1 1 0 8 0 amappl3 96 23023 0 22913 5 1 4 4 0 8 0 amappl2 88 1031 0 967 2 0 2 2 0 8 0 amappl1 80 24310 0 23696 15 0 15 15 0 8 0 amappl 88 31472 0 31305 5 0 5 5 0 92 0 dma8192 8192 3 0 3 2 1 1 1 0 8 1 dma4096 4096 3 0 3 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 3 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 193 0 7 4 0 4 4 0 8 0 uaddrrnd 24 3799 0 3766 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3799 0 3766 1 0 1 1 0 8 0 vmmpekpl 168 27931 0 27869 5 1 4 4 0 8 0 vmmpepl 168 233353 0 231299 140 46 94 102 0 357 0 vmsppl 480 3798 0 3766 5 0 5 5 0 8 0 rwobjpl 72 61198 0 54135 142 12 130 133 0 8 0 pdppl 4096 7606 0 7532 146 72 74 86 0 8 0 pvpl 32 19595 0 0 158 1 157 157 0 265 0 pmappl 256 3798 0 3766 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 509 0 143 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838b8ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a2402a0,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 msleep(ffffffff837cc6e8,ffffffff837cc6b0,4,ffffffff833dba69,0) at msleep+0x1ac sys/kern/kern_synch.c:230 reaper(ffff8000ffffd1f8) at reaper+0x14b sys/kern/kern_exit.c:454 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff838b8ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a2402a0,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838c5ba8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 msleep(ffffffff837cc6e8,ffffffff837cc6b0,4,ffffffff833dba69,0) at msleep+0x1ac sys/kern/kern_synch.c:230 reaper(ffff8000ffffd1f8) at reaper+0x14b sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7a0b0a959920, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7a0b0a959920, count: -1